agreeable to reason

See: rational
References in classic literature ?
Now as a community of wives is attended with many other difficulties, so neither does the cause for which he would frame his government in this manner seem agreeable to reason, nor is it capable of producing that end which he has proposed, and for which he says it ought to take place; nor has he given any particular directions for putting it in practice.
A spirit office inquiry into religious concernments recommended - We ought not adopt any religion merely because theirs have done it - until we ourselves have proved it to be agreeable to reason and the word of GOD.