intensity of faith
interchange of ideas
interval of leisure
intoxication of vanity
intrepidity of youth
intuition of immortality
invasion of thought
irony of life
J
jangle of sounds
jargon of philosophy
jumble of facts
justness of decision
K
keenness of intellect
kernel of truth
key of knowledge
keynote of success
king of finance
kinship of humanity
L
lack of restraint
languor of nature [languor = dreamy, lazy mood ]
lapse of time
laws of decorum
laxity of mind
legacy of thought
liberty of conscience
light of experience
limit of endurance
link of sequence
loftiness of spirit
look of dominance
loophole of escape
love of approbation [approbation = warm approval; praise]
lust of conquest
lustihood of youth
luxuriance of expression
M
magnanimity of mind
majesty of despair
man of iron
mantle of verdure [verdure = lush greenness of flourishing vegetation]
martyrdom of ambition
marvel of competency
mask of flippancy
mass of mediocrity
master of phrasing