Use your health, even to the point of wearing it out. That is what it is for. Spend all you have before you die; do not outlive yourself.
If history repeats itself, and the unexpected always happens, how incapable must Man be of learning from experience.
Life isn't about finding yourself. Life is about creating yourself.
We are made wise not by the recollection of our past, but by the responsibility for our future.
Do not waste your time on Social Questions. What is the matter with the poor is Poverty; what is the matter with the rich is Uselessness.
What we want is to see the child in pursuit of knowledge, and not knowledge in pursuit of the child.