John Wesley on 1 Timothy 4:15

Meditate - The Bible makes no distinction between this and to contemplate, whatever others do. True meditation is no other than faith, hope, love, joy, melted down together, as it were, by the fire of God's Holy Spirit; and offered up to God in secret. He that is wholly in these, will be little in worldly company, in other studies, in collecting books, medals, or butterflies: wherein many pastors drone away so considerable a part of their lives.