VIEWPOINTS | Five Leadership Lessons with Thomas Wellauer
Authored by , Senior Editor, Criticaleye
Few leaders have occupied as many different seats as
Thomas Wellauer. Across four decades, he has been a Senior Partner at McKinsey & Company, CEO of Credit Suisse Financial Services, Executive Board member at Novartis, Group COO at Swiss Re and Chair of SIX Group. Today, he is a Member of the Board at Aegon and a Board Mentor at Criticaleye.
Yet when Thomas reflects on his career, he does not begin with strategy, authority or results. He begins with a change in his own understanding of what leadership is for.
“When I was younger, I thought leadership was about making the right decisions. Today I think it is about something different: it is about helping other people become better than they thought they could be.”
Here are five lessons behind that conviction.
The Higher you Rise, the Less it is about Having the Answers
“Competence gets you into the room. Leadership determines what happens once you are there.”
The more senior you become, Thomas argues, the less you can rely on knowing more than everyone else. The toughest decisions have no single correct answer: they involve uncertainty, competing interests and incomplete information. Expertise matters, but judgement matters more. And judgement begins with the humility to recognise what you do not know.
“The older I become, the more I realise that leadership is not about having the best answers. It is about asking better questions.” Curiosity and the ability to listen are not optional extras; they are what keep experience from becoming a prison.
Make Yourself less Indispensable
“Good leaders solve problems themselves; great leaders create an environment where good decisions happen even when they are not in the room.”
For a successful executive, it can be tempting to remain at the centre of every important decision. Thomas believes the opposite is the greater achievement: building people and institutions that no longer depend on you. Authority is most valuable when it develops judgement in others.
That takes time, attention and genuine interest. “Every person has a story.” Understanding that story – what motivates someone, what worries them and where they can grow – is how leaders unlock potential. The best leaders create energy: people leave them with more clarity, confidence and commitment than they arrived with.
Character is what People see When Things go Wrong
“Pressure doesn’t change people. It reveals character.”
It is easy to talk about trust when things are going well. The real test is how a leader behaves when the outlook is uncertain, or someone is exposed. Great leaders become calmer, listen more carefully and create confidence without pretending to possess certainty.
Thomas has seen how much it matters to protect a colleague facing intense questioning from a Board or CEO. Tough feedback may still be necessary afterwards, but it can be given privately. “Trust isn’t built through speeches. It is built through thousands of small interactions.” People remember who stood beside them when it mattered.
Be Demanding and Kind but Never Confuse the Two
“People often confuse demanding leadership with hard leadership. I have found the opposite to be true.”
High expectations and humanity are not competing choices. Some of the hardest decisions offer the greatest opportunity to preserve another person’s dignity. Thomas believes underperformance must be addressed early, clearly and respectfully – before delay turns a difficult conversation into a destructive one. The decision may need to be tough; its implementation should be kind.
He has also watched fear produce short-term obedience at the expense of initiative and honesty. Eventually people stop trying to excel and start trying to stay out of trouble. Sustainable performance demands courage, candour and respect – not intimidation.
The Real Legacy is What Remains after you Leave
“The ultimate measure of leadership is not how indispensable you become. It is whether people and institutions are stronger because you were there.”
In a world reshaped by AI, geopolitical uncertainty and accelerating change, Thomas expects deeply human qualities to become more valuable, not less. Knowledge will be easier to access; judgement, integrity, curiosity and empathy will remain difficult to replace. The task of leadership is to help people make sense of complexity and move forward together.
But the most revealing question comes after the leader has gone. Are people more confident and capable? Do they make better decisions? Is the institution stronger? For Thomas, those answers matter more than any personal claim to indispensability.
“Organisations remember strategies for a few years. People remember how you made them feel for a lifetime.”
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