Not life, but good life, is to be chiefly valued.
Chance fights ever on the side of the prudent.
I cannot say whether things will get better if we change; what I can say is they must change if they are to get better.
Life is a perpetual instruction in cause and effect.
Conservation is humanity caring for the future.
There are many ways of going forward, but only one way of standing still.
The trouble with our times is that the future is not what it used to be.
Let him who would enjoy a good future waste none of his present.