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

A fool with a heart and no sense is just as unhappy as a fool with sense and no heart.

Where is it I've read that someone condemned to death says or thinks, an hour before his death, that if he had to live on some high rock, on such a narrow ledge that he'd only room to stand, and the ocean, everlasting darkness, everlasting solitude, everlasting tempest around him, if he had to remain standing on a square yard of space all his life, a thousand years, eternity, it were better to live so than to die at once. Only to live, to live and live! Life, whatever it may be!

You sensed that you should be following a different path, a more ambitious one, you felt that you were destined for other things but you had no idea how to achieve them and in your misery you began to hate everything around you.

You can't be angry with me, because I am a hundred times more severely punished than you, if only by the fact that I shall never see you again.

Paradise is hidden in each one of use, it is concealed within me too, right now, and if I wish, it will come for me in reality, tomorrow even, and for the rest of my life.

I can see the sun, but even if I cannot see the sun, I know that it exists. And to know that the sun is there - that is living.