If everyone sweeps before his own front door, then the street is clean.

The errors of the observer come from the qualities of the human mind.

If man thinks about his physical or moral state he usually discovers that he is ill.

I am fully convinced that the soul is indestructible, and its activity will continue through eternity.

The field of experience is the whole universe in all directions. Theory remains shut up within the limits of human faculties.

Whatever necessity lays upon thee, endure; whatever she commands, do.

One must keep repeating the Truth.