Who said “Man is a tool-using animal. Without tools he is nothing, with tools he is all.”?

“There is a great satisfaction in building good tools for other people to use.”

“Don't force it... get a bigger hammer.”

“But lo! men have become the tools of their tools.”

“A tool is but the extension of a man's hand, and a machine is but a complex tool. And he that invents a machine augments the power of a man and the well-being of mankind.”

“A worker may be the hammer's master, but the hammer still prevails. A tool knows exactly how it is meant to be handled, while the user of the tool can only have an approximate idea.”

“Wonder is the basis of worship.”

“Every noble work is at first impossible.”

“A fair day's wages for a fair day's work.”

“Speech is of time, silence is of eternity.”

“The fearful unbelief is unbelief in yourself.”

“Clever men are good, but they are not the best.”