Speculations apparently the most unprofitable have almost invariably been those from which the greatest practical applications have emanated.

Self-respect is the cornerstone of all virtue.

...Nature builds up her refined and invisible architecture, with a delicacy eluding our conception, yet with a symmetry and beauty which we are never weary of admiring.

The stars are the land-marks of the universe.

The besetting evil of our age is the temptation to squander and dilute thought on a thousand different lines of inquiry.

Occurrences which according to received theories ought not to happen, are the facts which serve as clues to new discoveries

To the natural philosopher, there is no natural object unimportant or trifling. From the least of Nature's works he may learn the greatest lessons.

The barrier has begun to yield.

Geology, in the magnitude and sublimity of the objects of which it treats, undoubtedly ranks, in the scale of the sciences, next to astronomy.

All human discoveries seem to be made only for the purpose of confirming more strongly the truths come from on high, and contained in the sacred writings.

There is a pinciple in the heart of music which has yet to be discovered.

I've often had to stand on the firm ground of my convictions when others thought I ought to be doing differently.

The undead did not love, but they remembered love with a savage loyalty.

Like a car idling, I gave of my energy until there was nothing more in my tank to give... all the while going nowhere.

Enemies strike at weak points.

...the haunted always take refuge in stillness.

It's up to us as photographers to give voice to the natural world.

Cultivate the attitude of gratitude. The attitude of gratitude is when you are grateful for every breath of life.

Ideas get substance and value not by being discussed but by being lived.

So to be standing here, this was really, truly, honestly never part of anything we even imagined in our wildest dreams.

Women and men have to fight together to change society - and both will benefit.