42The number forty two as the answer to a most ambitious question.

“In The Hitchhiker’s Guide to the Galaxy by Douglas Adams (42 is) ‘The Answer to the Ultimate Question of Life, the Universe, and Everything’, calculated by an enormous supercomputer over a period of 7.5 million years. Unfortunately no one knows what the question is. Thus, to calculate the Ultimate Question, a special computer the size of a small planet was built from organic components and named ‘Earth’.”
Wikipedia Article: 42 (number)

Honest truth

How can we be entirely honest and yet not speak that which is truth?

I would say because we are bound by our human limitations … bound, constrained, limited. As we are able to expand our boundaries by overcoming our limitations we may honestly change our opinions* and move closer to that which is true.

*Opinions―actions, judgements, conclusions … world view …

When we are honest we speak the truth as we understand the truth to be.

Our understanding is limited. We are not; omniscient, omnipotent, omnipresent. Our understanding is limited to what we individually do know. A humble heart is most conducive to an honest answer …