He that imposes an oath makes it.
Not he that for Convenience takes it. [ Butler ]

To what fortuitous occurrence do we not owe every pleasure and convenience of our lives. [ Goldsmith ]

Wealth cannot purchase any great private solace or convenience. Riches are only the means of sociality. [ Henry D. Thoreau ]

The natural progress of the works of men is from rudeness to convenience, from convenience to elegance, and from elegance to nicety. [ Dr. Johnson ]

That which can be done with perfect convenience and without loss, is not always the thing that most needs to be done, or which we are most imperatively required to do. [ John Ruskin ]

Posture or Attitude? Each of these words has its appropriate place, and one should not be misapplied for the other. Posture is the mode of placing the body, and may be either natural or assumed. Attitude is always assumed, and is intended to display some grace of the body, or some affection or purpose of the mind. Postures, when natural, accommodate themselves to the convenience of the body; when assumed they may be either serious or ridiculous. [ Pure English, Hackett And Girvin, 1884 ]