A man is not old as long as he is seeking something.
Interpretation
Age is not determined by years but by one's quest for knowledge and purpose.
This quote by Jean Rostand highlights the idea that the pursuit of goals, dreams, or knowledge keeps one youthful at heart. It suggests that as long as a person is actively seeking and yearning for something, they possess vitality and a spirit that transcends age, thus redefining what it means to grow old.
In practice
In a motivational speech about lifelong learning.
If a given scientist had not made a given discovery, someone else would have done so a little later. Johann Mendel dies unknown after having discovered the laws of heredity: thirty-five years later, three men rediscover them. But the book that is not written will never be written. The premature death of a great scientist delays humanity; that of a great writer deprives it.
Certain brief sentences are peerless in their ability to give one the feeling that nothing remains to be said.
My pessimism extends to the point of even suspecting the sincerity of other pessimists.
We spend our time envying people whom we wouldn't wish to be.
Stupidity, outrage, vanity, cruelty, iniquity, bad faith, falsehood - we fail to see the whole array when it is facing in the same direction as we.
When a scientist is ahead of his times, it is often through misunderstanding of current, rather than intuition of future truth. In science there is never any error so gross that it won't one day, from some perspective, appear prophetic.
God cannot forgive a sinner who does not acknowledge his sin.
Half of my library are old books because I like seeing how people thought about their world at their time. So that I don't get bigheaded about something we just discovered and I can be humble about where we might go next. Because you can see who got stuff right and most of the people who got stuff wrong.
What we learn through failure becomes a precious part of us, strengthening us in everything we do. So let the tough things make you tougher.
I believe that words are strong, that they can overwhelm what we fear when fear seems more awful than life is good.
The willow which bends to the tempest, often escapes better than the oak which resists it; and so in great calamities, it sometimes happens that light and frivolous spirits recover their elasticity and presence of mind sooner than those of a loftier character.
I confess I have yet to learn that a lesson of the purest good may not be drawn from the vilest evil.
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