Expression for "Respect them and suspect them"

Solution 1:

In the US we often hear the phrase "Trust but verify", popularized by Ronald Reagan with respect to the Soviet Union.

Solution 2:

'Speak softly and carry a big stick'. President Theodore Roosevelt.

Solution 3:

"Love all, trust a few, do wrong to none" -Shakespeare, All's Well That Ends Well

Solution 4:

'Trust in the Lord, but keep your powder dry.'--attributed to Oliver Cromwell addressing troops just prior to invasion of Ireland.

Solution 5:

“Trust is good, control is better” is another expression that conveys the meaning described:

• the expression has been ascribed to V. I. Lenin, not our first choice among icons of liberty. However, these words seem to encapsulate the purported defence of our freedoms, by elected governments on both shores of the Atlantic.

Source:http://grahnlaw.blogspot.it/2010/02/trust-is-good-control-is-better-us-eu.html