"The lamp of the body is the eye. If, then, your eye is simple, your whole body will be bright; but if your eye is wicked, your whole body will be dark..." (From Matt 6:22,23).
'Go on in all simplicity; (1) do not be so anxious to win a quiet mind, and it will be all the quieter... let your spiritual life be formed by your duties, and by the actions which are called forth by circumstances. Do not take overmuch thought for tomorrow. God, who has led you safely on so far, will lead you on to the end. Be altogether at rest in the loving holy confidence which you ought to have in His heavenly Providence.' (2) (F. De Sales).
'This deliverance of the soul from all useless and selfish and unquiet cares, brings to it an unspeakable peace and freedom; this is true simplicity. The state of entire resignation and perpetual acquiescence produces true liberty; and this liberty produces perfect simplicity. The soul which knows no self-seeking, no interested ends, is thoroughly candid; it goes straight forward without hindrance; its path opens daily more and more to 'perfect day', in proportion as its self-renunciation and its self-forgetfulness increase; and its peace, amid whatever troubles beset it, will be as boundless as the depths of the sea'. (Fénelon).
"But the wisdom from above is in the first place pure; and then peace-loving, considerate, and open to reason; it is straightforward and sincere, (1) rich in mercy and in the kindly deeds that are its fruit. True justice is the harvest reaped by peacemakers from seeds sown in a spirit of peace." (James 3:17,18 NEB).