Life is a succession of lessons which must be lived to be understood. All is riddle, and the key to a riddle is another riddle.

We must be our own before we can be another's.

When we are young, we spend much time and pains in filling our note-books with all definitions of Religion, Love, Poetry, Politics, Art, in the hope that, in the course of a few years, we shall have condensed into our encyclopaedia the net value of all the theories at which the world has yet arrived. But year after year our tables get no completeness, and at last we discover that our curve is a parabola, whose arcs will never meet.

Life can only be understood backwards; but it must be lived forwards.

It is one of the beautiful compensations in this life that no one can sincerely try to help another without helping himself.

Life is a succession of moments, to live each one is to succeed.