It is of great use to the sailor to know the length of his line, though he cannot with it fathom all the depths of the ocean.
It is easier for a tutor to command than to teach.
I have spent more than half a lifetime trying to express the tragic moment.
New opinions are always suspected, and usually opposed, without any other reason but because they are not already common.
As people are walking all the time, in the same spot, a path appears.
Where all is but dream, reasoning and arguments are of no use, truth and knowledge nothing.