This is my last message to you: in sorrow, seek happiness.

You are told a lot about your education, but some beautiful, sacred memory, preserved since childhood, is perhaps the best education of all.

How many ideas have there been in the history of man which were unthinkable ten years before they appeared?

It seems, in fact, as though the second half of a man's life is made up of nothing, but the habits he has accumulated during the first half.

I want to suffer so that I may love.

To strive consciously for an object and to engage in engineering -- that is, incessantly and eternally to make new roads, wherever they may lead.

They have this social justification for every nasty thing they do!