Since you make evil or good by your own thoughts, it is your ruling of your thoughts which proves to be your principal concern.

The stream of thought flows on; but most of its segments fall into the bottomless abyss of oblivion. Of some, no memory survives the instant of their passage. Of others, it is confined to a few moments, hours or days. Others, again, leave vestiges which are indestructible, and by means of which they may be recalled as long as life endures.

... the intellect, everywhere invasive, shows everywhere its shallowing effect.

In this real world of sweat and dirt, it seems to me that when a view of things is 'noble,' that ought to count as presumption against its truth, and as a philosophic disqualification. The prince of darkness may be a gentleman, as we are told he is, but whatever the God of earth and heaven is, he can surely be no gentleman.

Philosophy is at once the most sublime and the most trivial of human pursuits.

The sovereign voluntary path to cheerfulness, if our spontaneous cheerfulness be lost, is to sit up cheerfully, to look round cheerfully, and to act and speak as if cheerfulness were already there. If such conduct does not make you soon feel cheerful, nothing else on that occasion can. So to feel brave, act as if we were brave, use all our will to that end, and a courage-fit will very likely replace the fit of fear.

I am done with great things and big things, great institutions and big success, and I am for those tiny, invisible molecular moral forces that work from individual to individual, creeping through the crannies of the world like so many rootlets, or like the capillary oozing of water, yet which if you give them time, will rend the hardest monuments of man's pride.