Memory was a slippery thing—slick moss on an unstable slope—and it was ever so easy to lose one’s footing and fall

Just because you don't see something doesn't mean it isn't there. Some of the most wonderful things in the world are invisible. Trusting in invisible things makes them more powerful and wondrous.

Everything you see is in the process of making or unmaking or dying or living. Everything is in a state of change.

Sorrow is dangerous.

The purest regret, no matter what, is thinking you didn't love enough.

We all know that joy and sorrow are entirely matters of fate and have nothing whatsoever to do with planning.

The world's history is constant like the laws of nature and simple like the souls of men.

You need to be in the position where it is the cost of the fuel that actually matters and not the cost of building the rocket in the first place.

We blame Walt Disney for goldenrod's undeserved bad name. Despite Sneezy's pronouncement, plants such as goldenrod with heavy, insect-carried pollen rarely cause allergic reaction.

Never let a day pass without looking at some perfect work of art, hearing some great piece of music and reading, in part, some great book.

There is a rule in sailing where the more maneuverable ship should give way to the less maneuverable craft. I think this is sometimes a good rule to follow in human relationships as well.

Duke Ellington had a song, "What Am I Here For?" - this is what being pro-life is.

Only fools wait when their enemies are coming, to see if they may prove to be friends.

What a cruel irony of fate, to pair together, like Siamese twins united by the shoulders, scientific adversaries of such contrasting character!