He said to him, "What is written in the law? What is your reading of it?"
So he answered and said, "'You shall love the Lord your God with all your heart, with all your soul, with all your strength, and with all your mind,' and 'your neighbor as yourself.' " And He said to him, "You have answered rightly; do this and you will live." ( Luke 10:26-28 )
As for the specifics that apply to this saying, let God judge the conscience, heart/intentions of another. Notice it says to love God with all your mind, soul, etc. It does not say love God only by knowing all truth.