The crux... is that the vast majority of the mass of the universe seems to be missing.
We should be eternally vigilant against attempts to check the expression of opinions that we loathe.
I daresay one profits more by the mistakes one makes off one's own bat than by doing the right thing on somebody's else advice.
In all affairs it's a healthy thing now and then to hang a question mark on the things you have long taken for granted.
When you make a world tolerable for yourself, you make a world tolerable for others.
Gratitude is the most exquisite form of courtesy.
Man is only miserable so far as he thinks himself so.