You must not talk about 'ain't and can't' when you speak of this great wonderful world round you, of which the wisest man knows only the very smallest corner, and is, as the great Sir Isaac Newton said, only a child picking up pebbles on the shore of a boundless ocean.

Better is old wine than new, and old friends like-wise.

There's no use doing a kindness if you do it a day too late.

The Water Babies "Young and Old" When all the world is young, lad, And all the trees are green; And every goose a swan, lad, And every lass a queen; Then hey for boot and horse, lad, And round the world away: Young blood must have its course, lad, And every dog his day.

For science is ... like virtue, its own exceeding great reward.

Science frees us in many ways...from the bodily terror which the savage feels. But she replaces that, in the minds of many, by a moral terror which is far more overwhelming.

It is only the great hearted who can be true friends. The mean and cowardly, Can never know what true friendship means.