We don't get to know anything but what we love.

Enjoy what you can, endure what you must.

Thank God when He lays a burden on thee, and thank Him when He takes it off.

When the boy begins to understand that the visible point is preceded by an invisible point, that the shortest distance between two points is conceived as a straight line before it is ever drawn with pencil and paper...the fountain of all thought has been opened to him...the philosopher can reveal him nothing new, as a geometrician he has discovered the basis of all thought.

To quit smoking, you must first want to quit, but then you must also do the quitting

He is happy as well as great who needs neither to obey nor to command in order to be something.

Most pioneers are at the mercy of doubt at the beginning, whether of their worth, of their theories, or of the whole enigmatic field in which they labour.