How many thorns of human nature - hard, sharp, lifeless protuberances that tear and wound us, narrow prejudices, bristling conceits that repel and disgust us - are arrested developments, calcified tendencies, buds of promise that should have lifted a branch up into the sunny day with fruit; and flowers to delight the heart of men, but now all grown hard, petrified, for want of culture and a congenial soil and climate.

Few persons realize how much of their happiness is dependent upon their work, upon the fact that they are busy and not left to feed upon themselves. Blessed is the person who has some congenial work, some occupation in which to place one's heart, and which affords a complete outlet to all the forces that are in him or her.

Science has done more for the development of western civilization in one hundred years than Christianity did in eighteen hundred years.

Mounting toward the upland again, I pause reverently, as the hush and stillness of twilight come upon the woods. It is the sweetest, ripest hour of the day. And as the hermit's evening hymn goes up from the deep solitude below me, I experience that serene exaltation of sentiment of which music, literature, and religion are but the faint types and symbols.

We can outrun the wind and the storm, but we cannot outrun the demon of hurry.

The poor old earth which has mothered us and nursed us we treat with scant respect. Our awe and veneration we reserve for the worlds we know not of. Our senses sell us out. The mud on our shoes disenchants us.

The only countries that are outside of [ Nuclear Non-Proliferation Treaty] are Israel, Pakistan, India, and North Korea withdrew in the last few years.