He who is plenteously provided for from within needs but little from without.

If we are out of synch with ourselves, everything is out of synch for us.

The artist may be well advised to keep his work to himself till it is completed, because no one can readily help him or advise him with it... but the scientist is wiser not to withhold a single finding or a single conjecture from publicity.

To me the external existence of my soul is proved from my idea of activity. If I work incessantly until my death, nature will give me another form of existence when the present can no longer sustain my spirit.

I have always paid attention to the merits of my enemies, and found it an advantage.

Great passions are incurable diseases.

Our destiny often looks like a fruit-tree in winter. Who would think from its pitiable aspect that those rigid boughs, those rough twigs could next spring again be green, bloom, and even bear fruit? Yet we hope it, we know it.